Description and drawings of A Capacitance-type moisture detector; A high vacuum ball valve; A selective precipitation indicator system; Apparatus for printing copies from film strips; Apparatus for color sorting small, irregularly-shaped articles; Coaxial Topic: Measuring instruments.
Universal Ratio Sets can be calibrated by a number of different methods. The well established methods are very briefly outlined and emphasis is placed on some more recent developments. The choice of methods will depend upon available laboratory equipment Topics: Measuring instruments., Calibration.
Elastic devices such as load cells and proving rings, when used with comparison measurement techniques, yield uncertainties orders of magnitude smaller than generally accepted.Their use, in direct reading application, is affected by numerous characteristi Topics: Calibration., Measuring instruments.
The National Bureau of Standards has recently completed the development of prototype instrumentation for measuring the electric-field components of complex, high-level, near-zone electromagnetic fields from 0.1 to *1000 volts per meter, at frequencies fro Topics: Measuring instruments., Electromagnetism.